How can I view the resultant waveform?

Hi Everybody,

I haven't been able to view the waveforms that I'm generating; this is important to me at this time because I'm studying FM synthesis, and so would like to see the effects that changes I make in operator or analog have. I mean I can render to audio and look there, but I'm hoping there is a M4L or other way of simply viewing the wave, basically an oscilloscope is what I'm after.